부하 변동을 고려한 브리드 오프 센터형 유압 제어 시스템의 특성에 관한 연구

In this study, the characteristics of the hydraulic control system with bleed-off center type of a compact excavator were analyzed using developed analysis program. From the parametric analysis, the effects of each factor were revealed. Through the simulation with varying load pressures, the system parameter effects on the controllable region and the pump pressure and load pressure variations were studied. The results were compared with the experimental ones. Also power efficient and loss were discussed. The results and discussions of the present paper could aid in the performance improvement of a hydraulic control system of a compact excavator.